I just order my Extenda Swim wood buring pool heater. The guys on the phone were very helpful, and knew alot about there product( which is more than i can say for some heater companys). They made me a good deal because it was the end of their season. They said it would be here in a couple of days, i hope i can keep my pool open a while longer now. Maybe i can get some extra free time from the kids....If anyone has any suggestions i would really like to hear the best way to operate this heater.